Mascara brush



FIG. 1 is a top view of a first embodiment of a mascara brush, according to my new invention;

FIG. 2 is a rear view thereof;

FIG. 3 is a perspective view thereof;

FIG. 4 is a perspective view of a second embodiment of a mascara brush, according to my new invention;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

CLAIM The ornamental design for a mascara brush, as shown and described. 